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SELF FEEDING AND SMOKE GONSUMI-NG FURNAGE. -N'o-."274,990-. Patented Apr. 3, 188 3.

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SELF FEEDING AND SMOKE cons-11mm FURNACE. No, 274,990. Patented Apr- 3 1883.

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SELF FEEDING AND SMOKE GONSUMING FURNACE. No 274,990. Patented Apr 3,1,883.

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LICHFIELD'WATTQN suron nrn, or BIRMINGHAM, oouurr or WARWICK, ASSIGNOR on ONE-HALF TO WILLIAM EDMUND PARKES, on SOHO HILL, HANDSWORTH, COUNTY or STAFFORD, ENGLAND.

SELF- FEEDING AND SMOKE-CONSUMING FURNACE.

SPECIFICATION forming part of Letters Patent No. 274,990, dated April 3, 1883.

Application filed September 6, 1882. (No model.) Patented in England January 20,1881, No. 254.

To all whom it may concern Be it known that I, LICHFIELD WAT'roN .SUTCLIFFE, a subject of the Queen of Great Britain, and residentat Birmingham, in the county of \tVarwick,'England, have invented certain new and useful Improvements in Self- Feeding and Smoke-Consuming Furnaces, applicable in part to domestic fire-grates, (for which I have received Letters Patent in Great Britain, No. 254, dated January 20, 1881,) of which the following is a specification. The invention consists, first, in the combi nation, in a furnace, with the fire-chamber and inclined fire'bars, of a fuel-hopper having 1 a cover and a separate fuel-chan1ber communicating with said hopper through a contracted of said hopper, a vibratory dead-plate at the upper end of said firebars, and a device for operating it. e

The invention secondly consists in mechan- 0 ism for supporting and adjusting the position of the inclined fire-bars5 and, thirdly, in the construction and combination of parts of hotair fines or passages for supplying heated air to the gaseous products of combustion passing 5 from the furnace for burning the said products, also cold-air flues or passages for supplying cold air, when required, to the furnace.

Figure 1 represents a front elevation of a furnace containing my improvements applied to the heating of an eggended steam-boiler, and Fig. 2 is a portiou'of the same with the inclined fire-bars in their lowered position. Fig. Sis a longitudinal vertical section of Fig. l; and Fig. 4 is a longitudinal vertical section 5 of a portion of the same with the fire-bars in their loweredposition, as in Fig. 2. Fig. 5 is a horizontal section of the furnace, showing the hotand cold air fines, the sections on opposite sides of the fire-bars being taken at different levels. Fig. 6 represents a front eleva- 0 tion of a double furnace constructed according to my invention, each arrangement'being independent of the other.

The same letters of reference indicate the same parts in Figs. 1, 2,3, 4, 5, and 6.

a is the furnace, and a is the gas-generating V or coal-distillatory part of the'furnace, and I) I the inclined fire-bars of the same, between which lire-bars and the arch o the burning fuel is situated. The said fire-bars bare capable tiu of being depressed into the position represented in Figs. 2 and 4, or into an intermediate 1 position.

d is the dead-plate of the furnace,capable of a rocking or vibratory motion by means of the lever (1 (see the dotted position in Fig. 4,) for the purpose hereinafter explained.

e isa sliding stoking-door, through which the fuel may be fed to the furnace for the firstcharge. The said door also serves for gaining access to the furnace for any required purpose; The I said door may either be lifted by the lever 6 (represented in Fig. 1,) or the door may be provided with counterbalance-weights, as represented in thedouble'furnace, Fig. 6.

Above the gas-generating part a of the furnace is the fuel-hopperf, having at its bottom a hinged flap, g, by opening which more or less by means of the lever 71, connected to the said flap by a link, a greater or less quantity 8c of the fuel may be permitted to pass by its own weightfrom the said hopper into the gas-generating part a of the furnace and onto the dead-plate d in a distilled or heated state, from whence it gradually passes down the inclined tire-bars b, on which it is consumed,'the gases of combustion being effectually consumed and smoke prevented by mixing highly heated air with the said gases, as hereinafterexplained. The hopperfis provided at frontwith a hinged 9o door, 17, for charging it with fuel; or a sliding door, it, as represented in the double furnace, Fig. 6, may be employed for opening and closingthe hopper. Theinclinedmovablefire-bars b are supported and raised and lowered by the 5 following combination of parts.

In front of the furnace are standards or uprights I, to which the fire-bars b are hinged at b the said fire-bars being carried by a rectangular frame, m. The said frame m, carrying the fire-bars b, is supported by the cams n a, turning on the centers n M, connected by the chains a n to the wheels or pulleys or a on the axis a. By means of the lever a on the axis a the chains of a may be coiled upon or uncoiled from the wheels a n and the cams n a raised orpermitted to fall. The said cams are thereby made to raise or lower the inclined fire-bars Z). A pawl, a, (see Figs. 3and 4,) engaging with the ratchet-wheel n on the axis a preserves the fire-bars in the positions to which they have been adjusted. When the fire-bars I) are in the raised position, Figs. 1 and 3, the furnace is ready for working. When it is wished to diminish the heat of the furnace or to entirely stop the working of the furnace, the set of fire-bars b is lowered into the desired position and the flap g of the hopper is closed, so as to cut off the supply of fuel to the the nace. In this way the heat of the furnace may be regulated and the combustion arrested, as hereinafter explained. The motion of the bars I; disturbs and breaks up any clinkers which may form upon them. The front of the ashpit of the furnace is closed by a plate or door, q, and air for the, support of the combustion of the fuel in the furnace a passes through valves atp (see Fig. 6) in the said door. .By opening the valves atp more or less, the requisite quantity of air may be admitted to the furnace, or thesupply of air may beentirelycutott'. Should the fuel in the hopper f or in the gas-generating part a of the furnace clog, it may be agitated or disturbed, so as to cause'it to readily pass by its weight into the furnace at, by means of the vibratory dead-plate d, moved by the lever d I will now describe the arrangement of dues for heating the air to be supplied to the furnace for mixing with the combustible gases after they pass the arch 0.

Under the furnace-bed, and situated in the brick-work, are two sets of horizontal lines, 1' r and s s, at different levels, each set being divided into two passages by a verticaldirision. The shape of the flues or passagesis best seen in Figs. 3, 4, and 5. The coldair to be heated enters the lower fines, 'r r, by the passage 1, and after traversing the said lower fines, r r, it rises at the end 1' into the upper set of flues, s s, after traversing which the heated air passes into the flue or, closed at its outer end, (indicated in dotted lines in Fig. 5,) and rising in the vertical flue t enters the cold-airfiue a and passes at a high temperature by the side openings, Q) o, into the furnace, to mix with and burn the combustible gases passing from the furnace a. The same arrangement of fluesis situated at each side of the fire-bars. Cold air may be admitted to the flue u by opening the door if, the said cold air entering the furnace by the side openings, '17 e.

The improvements hereinbefore described, and illustrated in Figs. 1, 2, 3, 4, 5, and 6, may be applied to furnaces for various purposes.

Having now fully described my said invention and the manner of carrying the sameinto effect, what I claim is 1. The combination, with the fire-chamber and inclined fire-bars, of the fuel-hopper having a cover, and the separate fuel-chamber communicating with said hopper through a contracted opening, the said parts being arranged as described, so thatthe fuel intro duced into said hopper feeds itself by gravity through the contracted opening into the fuelchambcr and on to and down the fire-bars, sub stantially as set forth.

2. In combination with the fire-chamber and the inclined fire-bars, hinged to the rear ends, mechanism, substantially as described, for raisiug and lowering the front ends of said bars as one body, and a retaining device for securing said mechanism with the bars in their raised position, as set forth.

3. The combination of the hopper, fuelchamber below said hopper, jointed flap, inclined lire-bars leading to the mouth of said hopper,vibratory dead-plate, and its operating device, substantially as described.

4. The combination, with the fuel-chamberand the inclined fire-bars leading to the mouth mechanism, as explained, for adjusting said bars to different positions, and for retaining them in the position to which they may be adjusted, substantially as described.

,5. The combination, with the tire-chamber of a furnace and the heated fuel chamber coinmunicating therewith, of the hot-air fines con structed under the furnace, as explained, said flues being at different levels, and each divided by a vertical division, and communicating with said fire-chamber through a vertical flue and side passages, substantially as described.

6. In a furnace, the combination, with the heated fuel or gas-generating chamber and the fire-chamber, ot' the hot-air fines constructed below the fire-chamber in the bed of the furnace, as explained, and the flue or passage 11, through which said hot-air flues communicate with the fire-chamber, said flue or passage to having a door whereby cold air may be admitted, substantially as described.

LlClIFIELl) WAT'lON SUTCIJFFE, [t.

Witnesses:

GEORGE SHAW,

.tICI-IARD SKERRETT. 

